During a brain power outage, I manage to cast on eight hundred stitches instead of the required two hundred and something. Yes eight hundred as in 800. My husband knew there was something wrong but I refused to wait until I could double check the pattern. You know, because I know it "all" and left the pattern at home while running errands. Not that I recommend that you try this but, let me tell you, it wasn't difficult to get rid of the extra stitches.
Yarn: Brown Sheep Nature Spun Sport Weight in Stone
Needles: US 4 (3.55mm)
Pattern: Soay by Gudrun Johnston
Project page: here